>>reporter: this is what it looks like when steven colbert comes to congress. democrat inserrated the funny man to testify before the house sub committee on immigration because of this. >> it was time to get my farm on. and i was ready. >>reporter: for his comedy show colbert worked for a day as a farm worker. doing a job usually done by illegal immigrants. or kind of doing it. >> i'm paid by the bean or by the hour. >> bit hour. >> how many hours have i been working. >> about 12 minutes. >>reporter: show was funny but for this crowd much of colbert testimony fell flat. >> congresswoman asked me to share my vast experience spending one day as migrant farm worker. >>reporter: not so much maybe the easy answer is to have scientist develop vegetable that pick themself. hearing on the use of illegal farm work investigators do work most americans won't do. he chided congress for not dealing with the issue. >> i'm not a fan of the government doing anything. but i have to ask why isn't the government doing anything? maybe this bill would help. i don't know. like most